Professional tools for quick assembly, L-shaped and T-shaped structures, quick splicing. Widely applicable, can clamp European standards, 2020/2040/3030/3060/4040 models. Material: Aluminum alloy. The drill sleeve is heightened to enhance stability, effectively prevent deviation during drilling, and reduce drilling errors. Sharp drill bit, strong durability and long-lasting use. Professional aluminum profile puncher, accurate punching without deviation, safer clamping operation.